[Tauri App] Client crashes when system inactive for a time (Plasma)

[Wolf-Seisenbacher]

Describe the bug

Tauri client appears to crash when my system is left unattended for a while. My system's power settings are

It appears when I leave the computer on overnight, as I usually do, and come back in the morning, the app isn't running anymore. It never crashes while system is awake and in-use. I am unsure if there are logs somewhere I an scrape for reasons for crash.

I haven't pinned the exact amount of time, however when its a short amount of time it doesn't crash out, only after extended periods.

Reproduction

Open Sable Nightly
Walk away from PC for an extended period
Upon returning, notice the app is closed.

Expected behavior

App remains running unless I tell it to close

Platform and versions

Gentoo Linux
Kernel 6.18.39
KDE Plasma 6.6.6
Sable v1.20.1-nightly.260728035109-dev (fc6d055)

Additional context

No response

[eleboucher]

if you can get us logs or something to reproduce

[Wolf-Seisenbacher]

if you can get us logs or something to reproduce

I exported diagnostic data and there are no logs. Nor is there any indication on the reason. Nothing is being logged. It just isn't on after I walk away from the PC after a while. I have now launched it via terminal and waiting for the next crash and see if it says anything. It's repeatable by just leaving Sable on and leaving the PC alone for multiple hours. By the time I get back, the client is closed. This is not a problem with the Electron app, only the Tauri one.

Note: I can be on the PC for multiple hours using it, and the app doesn't crash, only when I am not using it does it appear to crash.

[Wolf-Seisenbacher]

[134439:134439:0728/131825.370281:ERROR:mojo/public/cpp/bindings/lib/interface_endpoint_client.cc:748] Message 2 rejected by interface blink.mojom.Widget
[2026-07-28][20:17:54][zbus::connection::handshake::common][INFO] write_command; command=Auth(Some(External), Some([49, 48, 48, 48]))
[2026-07-28][20:17:54][zbus::connection::handshake::common][INFO] write_commands; commands=[Auth(Some(External), Some([49, 48, 48, 48]))] extra_bytes=None
[2026-07-28][20:17:54][tracing::span][INFO] read_command;
[2026-07-28][20:17:54][zbus::connection::handshake::common][INFO] read_commands; n_commands=1
[2026-07-28][20:17:54][zbus::connection::handshake::common][INFO] write_commands; commands=[NegotiateUnixFD, Begin] extra_bytes=Some([108, 1, 0, 1, 0, 0, 0, 0, 5, 0, 0, 0, 109, 0, 0, 0, 1, 1, 111, 0, 21, 0, 0, 0, 47, 111, 114, 103, 47, 102, 114, 101, 101, 100, 101, 115, 107, 116, 111, 112, 47, 68, 66, 117, 115, 0, 0, 0, 2, 1, 115, 0, 20, 0, 0, 0, 111, 114, 103, 46, 102, 114, 101, 101, 100, 101, 115, 107, 116, 111, 112, 46, 68, 66, 117, 115, 0, 0, 0, 0, 3, 1, 115, 0, 5, 0, 0, 0, 72, 101, 108, 108, 111, 0, 0, 0, 6, 1, 115, 0, 20, 0, 0, 0, 111, 114, 103, 46, 102, 114, 101, 101, 100, 101, 115, 107, 116, 111, 112, 46, 68, 66, 117, 115, 0, 0, 0, 0])
[2026-07-28][20:17:54][zbus::connection::handshake::common][INFO] read_commands; n_commands=1
Illegal instruction

After leaving it on since last comment, it crashed again, and this is the result. This is the best I can do in terms of logs